Improvement in processes of preparing moldings for enameling



- M. A. OWE-NS, PROCESS or P EPA ING Mommas FOR ENAME'LING.

-No.171,629.- Patented Dec.Z8,187 5\ :LFETEHS, FHDTO-LITHOGRAFIIER.WASHINGTON. D C.

I U ITED STATES PATENT Orrron MICHAEL A. ownns, OF BROOKLYN, NEW'YORK.

IMPROVEMENT IN PROCESS-ES 0F PREPARING MOLDINGS FOR ENAMELlNG.

Specification forming part of Letters Patent No. 171,629, dated December28, 1875; application tiled July 1, 1875.

To all whom it may concern Be it known that I, MICHAEL A. OWENS,

of Brooklyn, in the county of Kings and State of New York, have inventeda new and useful Improvement in Preparing or Dressing Moldings; and I dohereby declare that the following is full, clear, and exact descriptionthereof, reference being .had to the accompanying drawing, which formspart of this specification. I

This invention, while applicable'tothe preparing or dressing of moldingswhich are not intended to be enameled, is more especially designed tothe preparing or dressing of enameled moldings, and will here bedescribed more particularly with reference to the latter.

The general object of the invention is to furnish the moldings in aneatly-finished manner, and more rapidly and economically than hasheretofore been done, but it more especially has in view giving to thebase edges of the moldings, in the ordinary process of preparing ordressing the latter, a clean and sharp finish without having recourse tosand-papering the under sides of the moldings after the latter have beensawed or planed from the board or strip on which they are projectedpreparatory to separating them. A further object of the invention, asapplied to enameled moldings, is to prevent the dulling of the tool ortools which are employed to separate the moldings and to remove thelatter from the surplus wood on which they are projected.

To these ends the inve ition' consists in making an under cut in thebody of the wood beneath each base edge of the molding, so that,although the moldings may be formed in groups arranged to occupyparallel relations with each other, each molding is perfectly andsmoothly finished as regards its base edges,and the latter are distinctprojections from the surplus wood precisely as if the moldings were madesingly or separately the'one from the other, and the after reduction ofthe surplus wood and separation of the moldings are made withoutimpairing the smooth finish given by the undercut to the base edges ofthe moldings. Furthermore, by said undercut, as applied to theproduction of enameled moldings, not only is the enamel, by a suitableconstruction of the gages or preparing irons, prevented from enteringthe grooves which separate the moldings in a group, but the enameliscarried clean under or down to the base edges of the moldin gs, and maybe of the same thickness at said edges as at any other part, so that noafter burnishing will remove it from the edges. This is a greatadvantage over merely tapering off the layer or covering of the enameltoward the bottom of the recesses or grooves, as in another patentedarrangement in which noundercut in the woodismade, but thegages orpreparing irons are merely constructed to thin otf the enamel at thebase edges of the moldings. The undercuts which I make may either bestraight or beveled, and may be made while the molding is passingthrough the molding-mill, or (that is, in the case of enameled moldings)they can be made in the preparing -machine during the process of slzlng.

Figure 1 shows a vertical transverse section of a group or pair ofenameled moldings in the course of construction and having my inventionapplied. Fig. 2 is a'view of a tool for making the undercuts beneath thebase edges of the moldings; and Fig. 3, a view of a gage or preparingiron used in laying on the enamel constructed to accord with theinvention. Fig. etis a view showing the group of moldings in the courseof having the surplus wood reduced to separate them.

A A are the moldings, of which there may be any number, arranged side byside, or in parallel relation with each other on the upper surface of a"strip before said moldings, after being enameled, are separated byremoving the necessary amount of stock or surplus wood from beneaththem. Said moldings may be of any desired shape in their transversesection, andbe undercut at either or both of their base edges. Theseundercuts b may be made by a tool B, entering the grooves d between themoldings A, and formed with lateral cutting edges or wings, c, which areconstructed to enter beneath the base of each molding, and virtually toseparate the latterconstruction of the guides, gages, or preparing ironsO, whichare not only shaped to cor- Urespond with the cross-section ofthe nnoldping, butalso" to enter the undercuts b be neath the bases ofthe moldings, or the tool B may be dispensed with, and thepreparing-iron G be constructed to make or scrape the undercut b, aswell as i to distribute a the enamelsover the molding and down to orbeneath the edge or edges of the base of the molding; but in either caseit is necessary that an undercut, b, be made in the wood extendingbeneath the base of the molding, so that theenamel will make a cleancover of the base edge or edges, and preferablyof the same thickness atsaid edges as at any other part of v the molding. After the moldingshave been passed through the preparing-.irons,and the 1 base or surplusportion lot the wood subsequently removed by sawing or planing, asheretofore practiced for the purpose of detaching the moldings, it willbe found that not. a: only are the base edges of the moldings freefrornall raggedness by reason of the underout I), but that said edgesare fully covered by the enamel without any necessity for tapering offthe latter at said edges, and all sandpapen' ing of'the under sidesoflgthe bases, Ofthfl] molding is avoided? {This isiduetotheundehlfl outb, which likewise prevents,the; enamel dulling the tool employed inmaking thereduction of the wood or removal of the surplus at stock toseparate the,m0ldings,,as shown in Fig.4. i

Iclaim--- 1. The method herein described of preparing enameled'moldingby, forming a recessor undercut under the lower edges of the same,leaving said moldings attached to the wood from which they are formed bya shank to allow the moldings to be separated by cutting the shankwithout defacing or cutting thrgugh orth the enamel, substantially asherein set and shown. l

2. In moldings for enamelin g, the undercuts b on the strip belowthegrooves d, which separate the parallelrows, said undercuts extendingunderneath the base edges of the moldings, substantially as and for" thepurposes herein described.

Witnesses:

HENRY '1. BROWN, MICHAEL RYAN.

MICHAEL A. OWENS. Q

